Leveling-machine.



A. E. IEBRAM 6L1. GOULDBOURN.

LEVELlNG MACHINE. APPUCATION HLED MAY 22. i911.

1,275,562. Patented Aug. 13, 1918.

4 SHEETS-SHEET 2- A. E. JERRAM & l. GOULDBOURN. LEVELING MACHINE. APPLlCATiQN FILED MAY22.\9\1.

1 ,27 5 ,562 Patented Aug. 13, 1918 4 SHEETS SHEET 3- A. E, JERRAM & J. GOULDBOURN.

LEVELING MACHINE.

APPLICATION FHED MM 22. nan.

1 ,275,562. Patented Aug. 13, 191&

4 SHEETS5HEET 4- III jg UNITED STATES PATENT OFFICE.

ARTHUR ERNEST JERRAM AND JOSEPH GOULDBOURN, 0F LEICESTER, ENGLAND,

ASSIGNORS, BY MESNE ASSIGNMENTS, T0 UNITED SHOE MACHINERY CORPO- RATION, OF PA'IERSON, NEW JERSEY, A. CORPORATION OF NEW JERSEY.

LEVELING-MACHIN E.

Specification of Letters Patent.

Patented Aug". 13, 1918.

Application filed May 22, 1917. Serial No. 170,321.

To all whom it may concern Be it known that we, ARTHUR ERNEST JER- RAM and Josnrn GoULneoUnN, subjects of the King of Great Britain, residing at Leicester, in the county of Leicester. England, have in vented certain new and useful Improvements in Leveling-Machines; and We do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appcrtains to make and use the same.

The present invention relates to sole pressing machines and more particularly to machines of the type disclosed in the patent to Jeri-am No. 1,116,071, dated November 3, 1914.

In machines of this type a. relative movement of approach is imparted to the shoe supporting jack and pressing form to bring the form into contact with the tread surface of the sole, when thereafter the sole is leveled by an oscillatory movement of the jack about an axis lying subsi antially in. the. tread surface of the sole.

()ne object of the present invention is to reorganize and improve machines of this type whereby the shoe supporting jack is caused to oscillate about an axis lying in the tread surface of the sole independently of variations in the height of the last or the thickness of the shoe bottom.

To this end one feature of the invention contemplates the provision in a machine of this type having a. shoe supporting member and a cooperating sole pressing member, of meclmnism for relatively actuating the two members to bring the tread surface of the sole to a fixed and determinate leveling position controlled by the pressing member independently of variations in the thickness of the shoe bottom and for locking the shoe supporting member against the thrust of the sole pressing n'ieinber after the shoe supporting member has been located in leveling position.

It is a further object of the invention to provide certain improvements applicable to leveling machines in general tending to increase the efficiency of these machines and enable a wide variety of shoes to be uniformly and effectively leveled.

With this object in view the various features of the invention consist in certain novel features of construction, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

In the accompanying drawings illustrating the preferred form of the invention, Figure l is a side elevation with parts in section, of a machine embodying the invention in. its preferred form; Fig. is a section on the line 2--2 of Fig. 1; Fig. 3 is a section on the line 3-3 of Fig. 1: Figs. i and 5 are sectional front and side elevations, respectively, of one of the shoe-supporting jacks; Fig. is a section on the line 6 6 of Fig. 1: and Fig. i is a side elevation of the front end of the machine showing one of the shoe-supporting jacks and its operative parts in operative position.

Like reference characters indicate like parts in all the figures.

The illustrated embodiment of the invention partakes of the general character of the leveling machine fully described in the patent to Jerram above referred to which has two jacks or work supports each of which is alternately swung (by intermittently operating mechanism rendered operative by a clutch controlled by the operator) from a vertical position to an inclined position in line with the corresponding form and rolled or tipped in contact with the form 1 (Fig. 1) upon two links 2, 3 pivoted to separated points on the jack and separated points on the frame, the. point of connection 4 of the link 2 to the jack forming the pivot about which the jack is swung into and out of leveling position. In the present embodiment however for initiating the leveling pressure, movement is imparted to the form 1, instead of to the jack, in a direction crosswise to that in which the jack swings and this is effected as follows:The lever 5 which carries the forms adjustably side by side is fulerumed at 500 on the frame of the machine toward one eud of the forms in order to exert different pressures upon different parts of the work. This lever is connected to an arm 6, acting as a bell-crank lever, pivoted on the same center as the lever The arm 6 engages the middle portion of a shaft 7 extending transversely of the lever 5 and the ends of which pass into circular openings in side walls of the lever 5. There is pinned on to the shaft 7, at each side of the portion engaged by the arm, a long bolt 8 (see Fig. L extending transversely of the lever 5 and of the shaft 7 and carrying at its end remote from the shaft a collar 9 and adjusting nut 10.

The lie-av springs ll through which the leveling pressure is applied are confined between these collars and collars 12 free to slide upon the bolts near the end of the latter adjacent to the shaft T and bearing upon the form-carrying lever There is ade quate clearance between the openings in the lever and the ends of the shaft 7 so that the shaft may be moved laterally by the arm 6 relatively to the lever 5 when the lever is arrested by the work and so that the springs ll may be thereby compressed to apply the leveling pressure. The arm ti is connected to one end of one link 13 of two connected links 13. ll constituting a toggle the remote end of the other link 14 bein pivoted to the machine frame. The toggle is adapted to be straightened and broken to swing the formcarryinp; lever 5 down toward and up away from the work respcctivel by a rod 15 pivoted at one end to the point of connection of the links 13, it with each other and coupled at the other end to a crank lti (see Fig. on a shaft 17 disposed transversely of the machine frame. Fixed upon this shaft is a gear wheel 18 meshing with a gear wheel 19 (Fig. 1) of twice the diameter mounted upon an adjacent parallel shaft 20 which has tixed upon it at each end outside the machine framm disks :21 each tuning a cam groove 2" formed on its inner face. These cam grooves on. the disks (which respectively operate the devices associated with each jack for swinginp the same into operative position and locking them in position and vice versa) are smiliar but relatively displaced 180 or thereabout with relation to the shaft 20 and each comprises two concentric portions 221 and 222 more or less oppositely disposed, the portion 221 corresponding to the periods when the jack is in operative position and the portion 222 corresponding to the periods when the jack is out of position respectively and two eccentric portions connecting the portions 221 and 222 and corresponding resptwtively the one to the movement of the lack into position and the locking of the same in such position and the other to the unlocking of the jack and its movement out of position.

As the mechanisms for ell'ecting the movement of the jack from receiving position into and out of leveling position and for locking the jack in leveling position are the same for each jack :1 description of one of these will snll'ice. The cam groove 22 in the disk referred to is engaged by a cam roll mounted on one arm of a bell-crank member 24 pivoted in the frame of the machine and the other arm of which is connected by a connecting rod 25 to one arm of a second bell-crank member 26 pivoted on the machine frame beneath the jack and the other arm of which carries a pin 27 which engages a cam slot 28 on one end of the link 3 pivoted at its other end on the jack. This cam and slot connection, as will be described more fully hereinafter. permits the jack to descend by its own weight into position and swings the link 3 to lock the jack in place as the arm of the bellarrank member 26 moves one way under the influonce of one eccentric portion of the cam groove 22 when the disk 31 bearing the same is rotated and swin s the link 3 in a reverse direction to unlock the ark and then lifts the jack out of position on the reverse movement of the bell-crank member under the influence of the other eccentric portion of the cam groove.

Each jack comprises a support 1?) for an iron last or foot 30 provided with a cvliir drical shank 31 and a carrier hollowed to receive this shank within which the latter is adjustable. as hereinafter described. The carrier is pivoted at stat its lower end upon one end of the link 2 the other end ul which is pivotally connected to the frame of the machine. An adjusting; screw 25? passes through this link and is maintained in contactwith the frame of the machine by the weight of the jack. Projecting from the carrier toward its lower end and in the direction in which the jack is swung into position is a curved arm 34- carrying at its lower end and freely pivoted thereon the link or latch 3 in which is formed the cam slot already referred to. T his latch is provided with a curved jaw 35 (see Fig. 7) adapted to engage a stud 36 on the frame of the machine. The jaw is concentric with tho pivotal connection 37 of the latch 3 to the arm 34 which projects from the carrier and that surface thereof 38 which engages the stud 36 as the carrier is moved into position is extended beyond the other surface. The swinging of the jack into position from the vertical or work receiving position and its locking in leveling position is accomplished as follows :The cam disk 21 (Fig. 1) it rotates causes the roll '23 on the bell-crank member 24 to pass into one of the eccentric portions of the cam groove 52:2 and therebv swings it and its associated parts. The pih 27 in the cam slot 528 referred to is thereby lowered, from the position in which it ap pears in Fi". 7, allowing the jack under its own weight to swing about the pivot 4 and the latch 3 with the curved jaw gradually approaches the stud 36 on the frame until the extended surface 38 of the jaw contacts with the stud when continued motion of the pin 27 in the cam slot 28 acts to swing the latch 3 about its connection 37 to the carrier arm 34 and cause the jaw to be advanced over the stud 36 until the latter has entered between both faces of the jaw. lVhen the cam disk 21 in moving causes engagement of the other eccentric portion of the cam groove 22 with the roll '23 then the reverse order of operations takes place.

The mechanism for giving the rolling and tipping motion to the jacks is as follows:- Loose upon the shaft 20 (Fig. 1) which carries the cam disks is a sleeve bearing an eccentric and a worm gear. The eccentric is encircled by a strap formed on one end of a connecting rod 39 the other end of which is pivoted to one arm of a lever 40 free to swing about an axis in line with the axis of the stud 36 (Fig. 7 and the other arm of which is divided into two portions 41, 42 (see Fig. 6) each having at its extremity a deep recess 43. These recesses are in a line parallel to the axis on which the lever can turn and are adapted to be respectively engaged as the jacks alternately come into position by the pivots 37 upon which the cam-slotted latches 3 are borne upon the carriers. The worm gear is driven by a worm 44 (Fig. 1) fast on the main shaft 45 of the machine upon which are the customary fast and loose pulleys. This worm drives the worm gear and, through the eccentric and connecting rod 39, reciprocates the recessed arms 41, 42 continuously during the operation of the machine. The movement of these arms is such that when one or other jack is in engagement therewith the links 2, 3 respectively connecting the carrier of that jack to the frame and connecting the projecting arm 31 of that carrier to the stud 36 on the frame are swung about their connection to the frame and the stud respectively and the jack is given a rolling and tipping motion on the form 1 similar to that imparted to the jacks in the case of the patent hereinbefore mentioned.

The stud 36 (Fig. 7) on the machine frame which is engaged by the curved jaw 35 is formed with curved surfaces to be engaged by the respective surfaces of the jaw and is free to swivel in the machine frame as the link in which the jaw is formed also swivels. As it is necessary, however, in order that the jaw may pass on to the stud at the predetermined moment, that the latter should at the time when the jaw approaches be disposed in the proper angular relationship thereto, the stud is rigidly connected, in a manner to partake of the angular movements thereof, to the lever 40 which carries the recessed arms 41, 42, this lever being by the mechanism shortly to be described caused to operate in timed relationship with the mechanism by which the jack is moved into and out of position and its locking and unlocking effected.

Fast upon the main shaft of the machine is a second worm 46 (Fig. 1) meshing with a worm wheel 47 (see Fig. loose on the shaft 17 to which is connected the mechanism for operating the form-carrying lever 5. The worm wheel e17 effects one complete revolution for every three revolutions of the eccentric and is, by dog-clutch mechanism about to be described, adapted to be posi tively clutched to the crank shaft 17 so as to more the latter in timed relationship to the eccentric and to be unclutched automatically therefrom after completing one revolution.

The crank 16 is bored, parallel to but out of line with the axis of its shaft, to receive a rod 48 free to slide in the bore and carrying at one end a block 19 adapted to enter a corresponding recess 50 in the side of the worm wheel l7 when the rotation of the worm wheel brings this recess in line with the block and the rod 18 is shifted in its bore to thrust the block into the recess. A spring 51 adapted to urge the rod normally toward the worm wheel is arranged between the other end of the rod and a flange 52 on the shaft 17, and near its end remote from the block it) in a portion of it which projects from the side of the crank the rod has a transverse notch formed in it. This notch has an inclined wall so that the notch is wider at one end than the other.

A curved block 51 carried on a lreadlcoperated arm 55 normally engages this notch and thereby holds the rod -18 against movement toward the worm wheel but allows the rod freedom of motion under the influence of the spring 51 when the arm is swung by operation of its treadle and the block 54 is thereby swung out of the notch 53. hen the arm 55 returns to its normal position upon release of its treadle the block 5i returns to normal position and comes into the path of the rod lb as the latter is carried around with the crank and a wedge-shaped end portion of the block 5i enters the wide end of the notch when the rod and crank are nearing their normal positions and by the coaction of the block with the inclined side wall of the notch the rod 48 is drawn along in its bore and disengaged from the worm wheel 17 as the crank shaft moves into its normal position. To reduce the pause which occurs lKtWiOll the operation of the clutch treudlc and the engagement of the block 49 with the recess 50 on the worm wheel -17, if the treadie is operated at a time when the block is out of line with the recess on the continuously moving worm wheel, advantage can be taken of the fact that this Wheel performs one complete revolution during three complete revolutions of the eccentric, to place three such recesses 50 at 120 to each other on the Wheel 47 whereby the coming into operation of the crank shaft in the predetermined timed relationship to the jack-rolling mechanism is insured with but a very slight delay due to the cause referred to.

The cylindrical shank 31 (Figs. 4 and 5) of each last support 29 is slotted transvcrscly at 56 toward its lower end for a considerable portion of its length and at the lower end of the slot the walls 57, 58 thereof are inclined outwardly at equal angles to the axis of the shank to form similar wedge portions on the end of the shank. The support is provided at its upper end with a wide flange 57 into which a bolt 58, disposed parallel to the lengthwise axis of the shank, is adjustably threaded. This bolt passes loosely through a hole in a similar flange 59 on the carrier 32, its head situated on the side of the carrier flange 59 remote from the flange 57 on the shank, acting as a stop to limit the longitudinal extension in length of the jack under the influence of two compression coil springs 60, 61 by which the last is yieldingly supported and which are, in the slotted portion of the shank 31, confined between the shank and the lower internal portion of the hollowed carrier. In the lower portion of the carrier 32 are mounted two similar wedges 62 63 having each two faces 6L 65 inclined at dill'erent angles to the longitudinal axis of the Carrier and free to slide toward and from one another transversely of the height of the carrier upon fixed supports 66 on the carrier which prevent them from moving longitudinally of the carrier. one face of each wedge is adapted to coact with one of the inclined walls 57, 58 of the slotted ortion of the shank and the other inclined aces of the wedges are adapted to engage opposite faces of a wedge 67 mounted so as to move between the wedges and longitudinally of the carrier. This wedge is pivoted on a link 68 connected to one end of a lever 69 disposed transversely of the carrier and fulcrmned upon one end of a rod 76 the other end of which is pivoted to the flange 57 on the upper end of the support. A spring-pressed plunger 71, mounted on the arm 3% which projects from the carrier toward its lower end, bears on the other end of the lever 69 and normally acts to swing the lever in a direction to thrust the wedge 67 connected to the lever up between the side wedges 62, 63, and move them trans verscly on their supports 66 to bring their outside faces 64 into engagement with the inclined walls 57 58 on the shank. The angle of the central Wedge is somewhat less than twice the angle whose tangent 1S equal to the coeflicient of friction between the surface of the wedge 67 and the corresponding surface 65 of one or other of the wedges 62, 63 with which it contacts (6. 9., the angle of this wedge may be 15 where all the coacting surfaces are of polished steel) while the angle contained between the other faces 64 of the wedges (i. 0., the angle between the inclined walls on the bottom of the shank) is considerably greater. As a consequence a slight movement or the shank longitudinally in the carrier produces such a motion of the wedges 62, 63 transversely thereof that a proportionately greater movement of the central wedge 67 is required to keep the latter from being gripped between the wedges 62, 63 and with this in view and for the purpose hereinafter referred to the fulcrum of the lever 69 carrying the central wedge is appropriatel disposed on that side of the middle of the lever nearest the spring-pressed plunger 71. Upon the edge of one of the cam disks 21 (Fig. 1) are disposed two cam pieces 72 arranged diametrirally opposite to one another and adapted as the cam disk rotates to come into contact with one arm of a bell-crank lever 73 and for a short period to swing the lever into such a position that one of two "Faces 74 (see Fig. 6) on the end of its other arm will form an abutment. for that end of the wedgecarrying lever 69 which is acted on by the spring plunger 71 ot' whichever jack happens at the; time to be in leveling position.

The jack locking device described above is disclosed and claimed in a copending ap plication filed of even date herewith.

The operation of the machine is as follows: Assuming the jack under considera tion to be in the vertical work-receiving position and to have had a boot or shoe duly placed upon the iron foot or last 30 clamped upon its support and the other jack consequently in leveling position and undergoing leveling, operation of the clutch treadle will swing the block 5% out of the notch 53 in the rod i8 mounted in the crank 16 and leave the rod 48 free to move (under the influence of its spring 51) toward the worm wheel 47 on the crank shaft 17 and to thrust the block 49 on the rod into one of the recesses 50 in the wheel when during the continual rotation of this wheel by the worm 46 on the main shaft 4-5 a recess comes into line with the block. As soon as the connection has been established in this way the crank shaft 17 and the cam disks 21 commence to rotate. The toggle 18, H of the mechanism for moving the forin-carrying lever 5 is broken by the movement of the crank 16 and the leveling pressure taken of? the boot or shoe on the jack which is in leveling position. As the form-carrying lever 5 starts to move away from the work under the influence of the continued movement of the crank shaft, the roll 23 in the cam groove 22 of the disk 21 corresponding to the jack which isin beveling position enters one of the eccentric portions and by the coaction of the pin 27 on the bell-crank member 26 with the cam slot 28 in the corresponding jawed link 3 the latter is swung, about its pivotal connection 37, with the projecting arm 3i, to tree the jaw 35 from the stud 36 on the frame. This movement is con'ipleted as the continuously moving lever 40 of the jack rolling or tipping mechanism reaches one end position in which the end of the adjusting screw 33 on the link 2 comes into contact with the frame. The continued movement of the bell-crank member 26 then (by the action of the pin 27 thereon bearing against one end ot' the cam slot 28) swings the jack about the pivotal connection 41 and the link 2, as the pivot 37 swings at this moment out of the recess 43 in the lever 40, becomes stationary. As this jack now rises the roll 23 in the cam groove 22 of the disk 21 corresponding to the other jack passes into an eccentric portion and the said other jack commences to swing down into leveling position (about its pivotal connection 41 to the link 2 the adjusting screw 33 of which is at that time resting on the frame) with the jawed link 3 resting on the pin 27 on the descending bell-crank member 26 which pin at that time occupies the top end of the cam slot 28. It will be understood that during this time the form-carrying lever 5 will have been gradually rising out of leveling posi tion to give clearance for the one jack to more up from beneath its form and for the other jack to descend beneath its form. It will be further understood that at this time the eccentric is idly reciprocating the lever 40. The formcarrying lever 5 having risen to its greatest height is by the continued rotation of the crank 16 gradually returned toward leveling position and the rising jack gradually assumes the vertical position in which it finally comes to rest, the roll 23 of its operating mechanism passing once more into a concentric portion of the cam groove 22 in the cam disk 21. Moreover the removal of the leveling pressure from the work on this jack will have al lowed the support 29 to rise in the carrier 32 under the influence of the springs 60, 61 to the limit permitted by the stop 58, while the spring-pressed plunger 71 will have swung the lever 69 on which it bears about its fulcrum to cause the central wedge 67 in the carrier to follow the upward movement of the support and spread apart the wedges (i2, 63 so as to maintain them in contact with the inclined side walls 57, 58 of the shank and by this contact of these parts will have locked the support, in the manner more fully described below, rigidly against any down thrust or blows to which the work or the foot or last may be snl jected in the ensuing removal of the treated work or the replacement thereof by the work to be leveled.

The pivot 37 by which the jawed link 3 of the descending jack is supported on the projecting arm 34 passes into the recess 43 of its corresponding arm 41 or 42 of the rocking lever 4-0 as the latter is about to move in a direction to lift the link 2 away from its position of rest against the frame and when, consequently, a rocking motion of the jack to roll the work with relation to the form 1 from the heel toward the too is about to commence. At the same moment the extended face 33 of the jaw 35 has come. in contact with the stud 36 on the frame. The jack in consequence of the support ati'orded by the link 2 and by the contact of the jaw face 38 with the stud 3G and ot the rocking of the pivot 37 now engaged in the recess 43 of the rocking lever 40 commences its rolling and tipping movement while the continued travel of the cam disk 21 causes the roll 23 in its cam groove 22 to complete its travel in the eccentric portion thereof and in so doing swings the bell-crank member 26 so as to cause the pin 27 to travel to the end of the cam slot 23 on the jawed member 3 and swing the latter about its pivotal connection 37 to the carrier arm so as to engage the stud 36 on the frame between both faces of the jaw 35. At this time one of the cam pieces 72 on the edge of the cam disk 21 bears on the bell-crank lever 73 so as to cause the latter to furnish a solid abutment for that end of the wedge lever 69 which is normally acted upon by the. spring plunger 71. The central wedge 67 is thus held in a position which permits a slight initial downward movement of the last 30 under the pressure of the form 1. The downward movement of the last support imparted by the pressing form causes the rod 70 to swing the lever 69 about the pivotal connection with the plunger 71 and withdraws the wedge 67 sufliciently from between the transversely sliding wedges 62, 63 to keep these from binding upon the middle wedge 67. After the link 3 has swung into final position the rocking of the jack gradually advances the line of contact of the work and form toward the toe end of the form and at a time when a portion oi the forepart of the. boot or shoe sole is in contact with the form, and therefore when the last support has been pressed down by this contact with the form to a greater or less extent dependent on the thickness of the bottom of the boot or shoe, the cam piece 72 passes away from beneath the bell crank lever 73 and the spring-pressed plunger 71 comes into action to swing the lever 69 about its connection to the rod 70 and insert the central wedge 67 firmly between the side wedges 62. 63. The last support is now securely locked against the leveling pressure. Any longitudinal thrust upon the shank 31 will by the inclined walls 57, 58 at its lower ends be transmitted to the side wedges 62, 63 and be therein distributed between the support 66 for the latter and the eoacting i'aces (35 of these wedges and the central wedge 67. The angle of this latter wedge will make itimpossible for the parts to more even under the heaviest loads.

The continued rotation of the crank shaft 17 now completes the straightening of the toggle 13, Li and the form-carrying lever 5 having been arrested by contact with the work now locked in position, the continued movement of the arm 6 connected to the toggle moves the cross shaft 7 within the openings in the side walls of the form-carrying lever 5 compresses the springs 11. and thus applies the leveling pressure, As the rocking movement of the jack once more advances the line of contact of the work and form toward the heel end of the form, the crank shaft will be completing one revolution and the treadlc-operated arm 55 having upon release of the treadle returned to normal position the block 54 upon it will enter the wide end of the notch 53 on the notched rod 48 and gradually draw it away from the recess 50 in the worm wheel 47 so that as the crank shaft 17 comes to the end of its complete revolution the block 49 on the rod 48 leaves the recess 50 in the Worm wheel T and the worm wheel can continue idly to rotate during the further rocking of the jack which is allowed to continue as long as desired, the mechanisms for mov ing the form-carrying lever 5 and for moving the acks into position and locking them therein and vice versa remaining out of action until the treadlc is next operatedwhen the jack which is in leveling position comes out of position and that which has meantime been out of position comes down into leveling position.

\Vhile it is preferred to employ the specific construction and arrangement of parts shown and described, it will. be understood that this construction and arrangement is not essential except so far as specified in the claims, and may be changed or modified without departing from the broader fca tures of the invention.

The invention having been described what is claimed. is:

1.. Asoleleveling machine,having, in com bination, a shoe supporting member, a (:0- operating sole pressing member, mechanism for relatively moving the two members to ward one another into leveling position and for relatively actuating the two members when in leveling position to shape the shoe sole under pressure constructed and arranged to impart a movement of variable extent to the shoe supporting member to bring the tread surface of the sole to a predetermined leveling position controlled by the pressing memher, and means for locking the shoe supporting member against the thrust of the for relatively moving the two members toward one another into leveling position arranged to impart a movement of variable extent to the shoe supporting member to bring the tread surface of the sole to a predetermined leveling position controlled by the pressing member, means for locking the shoe supporting member against the thrust of the sole pressing member after the shoe supporting member has been located in leveling osition, and mechanism for relatively osci lating the two members when in leveling position about an axis lying substantially in the tread surface of the sole to shape the sole to the last.

3. A sole leveling machine,having in combination, a shoe supporting member, a 00- operating sole pressing member, mechanism for rocking the shoe supporting member from a work receiving into a leveling position, means for moving the sole pressing member toward the shoe supporting member to engage with the tread surface of the shoe sole mechanism for locking the shoe supporting member against the thrust of the pressing member after the latter has engaged with and lo catcd the tread surface of the solo in a predetermined position, and mechanism for relatively actuating the two members when in leveling position to shape the sole to the last.

4. A sole levelingmachine,havingin combination, a shoe supporting member, a sole pressing member, means for moving the shoe supporting member into alinement with the sole pressing member, mechanism for moving the sole pressing member toward the shoe supporting member. yielding connections between the sole pressing member and actuating mechanism, and means for loeking the Shoe supporting member against the thrust of the sole pressing member after the sole pressing member has brought the tread surface of the sole to a predetermined position.

solclevcling machinediaving in combmation. a sole pressing member, a carrier,- a shoe supporting member yieldinglv mounted therein. mechanism for moving the sole prcsslng member toward the shoe supportmg member, means for locking the shoe supporting member to the carrier after the sole pressing member has located the tread surface of the sole in a predetermined position, and mechanism for relatively actuating the two members to level the sole. I

6. A sole leveling machine, having in com" bina tion, a sole pressing member, a cooperatmg shoe supporting member, means for rocking the shoe supporting member from a work receiving into a leveling position in alinement with the sole pressing member, means for normally locking the shoe supporting member against the thrust of the sole pressing member, and mechanism for rendering the locking means inoperative during the preliminary engagement of the sole pressing member with the shoe sole to permit the tread surface of the sole to be located in a predetermined position controlled by the pressing member.

7. A soleleveling machine, having in combination, a lever, a pair of sole pressing forms carried by the lever, a pair of shoe supporting jacks, means under the control of the operator for moving the jacks in opposite directions into and out of alinement with the pressing forms and for actuating the lever to move the forms away from and toward the jacks, and mechanism for oscillating the jack which is supported in leveling position in alinement with the cooperating pressing form.

8. A sole leveling machine, havin in combination, a sole pressing form, a s oe supporting jack, means under control of the operator for moving the jack from a vertical into an inclined position in alinement with the form and for moving the form toward the jack to engage with the shoe sole, and mechanism for oscillating the jack about an axis in the tread surface of the shoe sole when in alinement with the form to shape the sole to the last.

9. A sole leveling machine, having in combination, a sole pressing form, a shoe supporting jack, means under the control of the operator for moving the jack from a vertical into an inclined position in alinement with the form, continuously operating mechanism for oscillating the jack, means for connecting the jack to the mechanism when the jack is brought to an inclined position, and means for moving the form toward thp jack to engage with and shape the shoe so e.

10. A sole leveling machine, comprising a shoe supporting member, two supporting links pivotally connected to the member, means for rocking the member about the pivotal connection with one of the links to move the member from a work receiving into a leveling position, mechanism for oscillating the shoe supporting member, and means for connecting the second link to the oscillating mechanism when the member is rocked into leveling position.

11. A sole leveling machine comprising a shoe supporting member, two links pivotally connected to the member, a support for retaining the member in a vertical position constructed and arranged to permit a rocking movement of the member from a vertical. into an inclined position about the pivotal connection with one of the links, mechanism for oscillating the member, and means for connecting the second link to the oscillating mechanism when the member is rocked into an inclined position.

12. A sole leveling machine, comprising a shoe supporting jack, two links pivotally connected to the jack, means for causing the jack to initially rock from a vertical into an inclined position about the pivotal connection of one of the links, and means for oscillating the jack when supported in in clined position by both of the links.

13. A sole leveling machine, having in combination, a pressing form, a cooperating shoe supporting jack, mechanism for oscillating the jack, and means acting automatically for first disconnecting the jack from the oscillating mechanism and for next moving the jack from a leveling position into a work receiving position.

14. A sole leveling machine, having in combination, a shoe supporting member, a cooperating sole pressing member, means for yicldingly supporting the shoe supporting member in elevated position, means for moving the pressing member toward the shoe supporting member to engage and locate the tread surface of a shoe sole in a predetermined leveling position, means for locking the shoe supporting member in leveling position, and means for thereafter moving the pressing member to apply pressure to the shoe sole.

15. A sole leveling machine, having in combination, a pressing member, a cooperating shoe supporting member, means for moving the shoe supporting member from a vertical to an inclined position, means For continuously oscillating the shoe supporting member when in an inclined position, and means for moving the pressing 1nember toward the shoe supporting member constructed and arranged to be automatically disconnected when a predetermined move ment has been imparted to the pressing member.

16. A sole leveling machine, having in combination, a shoe supporting member, means for oscillating the shoe supporting member, a lover, a pressing member carried thereby, a pressure spring interposed between the lever and pressing member, a toggle for oscillating the lever to move the pressing member toward the shoe supporting member, and means for actuating the toggle constructed and arranged to be antomatically disconnected when the toggle is straightened to cause the form to engage with the shoe sole and exert a leveling pressure thereon.

17. A sole leveling machine, having in combination, a pressing member, a shoe supporting member, a rotary cam, means under the control of the operator for rotating the ram, mechanism operated by the cam for rocking the shoe supporting member from a vertical into an inclined position, a lock for normally preventing movement of the shoe supporting member in one direction, and means actuated by the cam for rendering the lock inoperative for a predetermined time during the initial engagement of the pressing member with the shoe sole.

18. A sole leveling nnu'hine, having in rombinat ion, a pressing member, a. cooperating shoe supporting member, a crank shaft, connections between the crank shaft and pressing member for moving the latter toward and from the shoe supporting member, a cam operated from the crank shaft at onehalf the speed of the crank shat't and-arranged to impart a movement to the shoe supporting member from work receiving into leveling position and return during one complete rotation, and means under the control of the operator for causine" the crank shaft to make one complete rotation and stop.

I A sole leveling machine having, in combination, a pair of shoe supporting jacks, a term warrior, a pair of forms mounted upon the carrier, a crank shaft, connections between the crank shaft and form carrier to move the latter toward and from the shoe supporting jacks, a ram arranged to move each jack from work receiving into levelingpi'isition and return during one complete rotation, n ains t'or actuating the cam at halt the speed ol the crank shaft, and means under tbe control of the operator for imparting one complete rotation to the crank shaft.

20. A sole leveling machine, having in combination, a shoe supporting member, a sole pressing member, means for imparting a relative approaching movement to the two members, and means for causing the tread surface of the shoe sole to assume a maletermined position governed by the pressing member.

21. A sole leveling machine having, in combination, a shoe supporting member, a sole pressing member, means for moving the sole pressing member toward the shoe supporting member, and means for locking the shoe supportingmember against the thrust of the sole pressing member during the continued movement of the sole pressing 1nember toward the shoe supporting member.

2;. A sole pressing machine having, in

combination, a shoe supporting member, a sole pressing member, yielding connections for moving the sole pressing member toward the shoe supporting member, and means for locking the shoe supporting member against the thrust of the sole pressing member during the continued movement of the sole pressing member to cause a pressure to be applied to the shoe sole through the yielding connections of the sole pressing member.

22 A sole leveling machine having, in combination, a shoe sup mrting jack, a sole pressing form, means for imparting a relative movement of approach and oscillation to the jack and form, means for yieldingly supporting the jack and means for locking the jack against the thrust of the form when the latter engages with a predetermined portion of the shoe sole.

24. A sole leveling machine having, in combination, a shoe supporting member, a sole pressing member, means for relatively moving the two members toward one another, and mechanism operating in timed relation to the relative movement of the two members to lock the shoe supporting member against the thrust of the sole pressing member.

25. A sole leveling machine having, in combination, a. shoe supporting member, a sole pressing member, mechanism for imparting a movement of predetermined extent to the sole pressing member to move the latter toward the shoe supporting memher, and means for locking the shoe sup porting member against; the thrust of the sole pressing member when the tread surface of the shoe sole has been located in a. position predetermined by the sole pressing member.

26. A sole leveling machine comprising a shoe support, a carrier for the shoe support, a link pivotally connecting the carrier with the frame, a second link pivoted to the carrier, an arm for sustaining the carrier in vertical. position, means for moving the arm to permit the carrier to move into an inclined position under the action of gravity, a continuously oscillating arm, and means for connecting the carrier with the oscilating arm when the carrier is moved into an inclined position.

ARTHUR ERNEST J ERRAM. JQSEPI'I GOULDBOURN.

copies of this patent may be obtained for five cents each, by afldrelsing the "commissioner of Patents, Washington, D. G." 

